6 citations · 7 across the 6 of their papers we have counts for
6 papers
Numerical prediction of the piezoelectric transducer response in the acoustic nearfield using a one-dimensional electromechanical finite difference approach
O. Melchert, E. Blumenröther, M. Wollweber +1
We present a simple electromechanical finite difference model to study the response of a piezoelectric polyvinylidenflourid (PVDF) transducer to optoacoustic (OA) pressure waves in…
Detection and numerical simulation of optoacoustic near- and farfield signals observed in PVA hydrogel phantoms
O. Melchert, E. Blumenröther, M. Wollweber +1
We present numerical simulations for modelling optoacoustic (OA) signals observed in PVA hydrogel tissue phantoms. We review the computational approach to model the underlying mech…
Efficient polar convolution based on the discrete Fourier-Bessel transform for application in computational biophotonics
O. Melchert, M. Wollweber, B. Roth
We discuss efficient algorithms for the accurate forward and reverse evaluation of the discrete Fourier-Bessel transform (dFBT) as numerical tools to assist in the 2D polar convolu…
Optoacoustic inversion via Volterra kernel reconstruction
O. Melchert, M. Wollweber, B. Roth
In this letter we address the numeric inversion of optoacoustic signals to initial stress profiles. Therefore we put under scrutiny the optoacoustic kernel reconstruction problem i…
Direct and inverse solver for the 3D optoacoustic Volterra equation
J Stritzel, O Melchert, M Wollweber +1
The direct problem of optoacoustic signal generation in biological media consists of solving the inhomogeneous optoacoustic wave equation for an initial acoustic stress profile. In…
Detection, numerical simulation and approximate inversion of optoacoustic signals generated in multi-layered PVA hydrogel based tissue phantoms
E. Blumenröther, O. Melchert, M. Wollweber +1
In this article we characterize optoacoustic signals generated from layered tissue phantoms via short laser pulses by experimental and numerical means. In particular, we consider t…